Apparatus for grinding optical lenses.



'UNITED STATESl PATENT OFFICE- MAURICE MOLINEAUX, F NEW YORK, N. Y,

APPARATUS FOR GRINDING OPTICAL LENSES.

To'all 'io/tom it may conc-em.'

Bc it.' known that 1', Maintien .\lor,iNEaUx, a citizen of the UnitedStates,y a resident of the borough of Bronx, city and State ofNowl'vorhhave invented a new and useful Im1no\enient` in Apparatus for('ifrinding Optical Lenses,"oij which the following is a specification.:V

Myiin'vention' relates' more particularly to 0 Van attachment suitableto be mounted on any machine such as in ordinary use forgrindin'g'therinis of optica] lenses. A

Ifai'lri'iiarlthat it' is not 'nen'.,toeo4 mount theiil- Sftenirigframe, carrying the" lens,- that 5 it be rotated to present the lens inopive position for lieveling thc edges to receive a frame, as well as toset the edge. Bly invention is1 however, distinguished by thense of adriving! shaft haring both-:leid l ani flexible sections, the formerjournaled in"ii;`,id'bearings.

I willriow specify and describe my in- 'ventiii'fbyE reference fo theaccompanying drawi'iiif in: which 4 lidentical letters and i prdinzils'indicate'. sirnilar parts;

Fig'r'e"n1,"""rs a' 'pl'.ii1 view of a grinding machine embodying; in'yinvention.

" Fig. 2,"is',`a section of the saine cut through at'theline A, A, onFig. 1.

Figa 3, is-a transverse section broken away, illustratingv 'the rockingframe and gear.

Figs. 4 and 5 are fragmentary transverse sectional views of details.

In Fig. 11 the grinding wheel 1 is shown carriedby the power shaft 3,which is journaied in the main frame 2. 'ihe power shaft carries at oneen d the power pulley 4 and the other end is operatively connected, andgives motion to the' flexible driving ',sliaft-s 5 through the chain andspur geur shown or. Figs. 1 and 3. The flexible driving shafts 5 areshown as :journaled in the rocking frame (i. The 'latter is carried bythe shaft 7 as shown in Figs. '2 and 3, and is provided with theVsprin,f ,rs 8, H, which are attached at the other 'end t-o themaiwfiana: 9 as .shown on Fig. l. l`be.-;o springs operatel to normallyretain the rocking frame in an advanced position pro\ idiug a yieldingsupport fe the material. and retaining' the lens in ope.ativc contactwith the grinding face. 'iho shaft 7 is imiriialed in tlaboss 18 of themain ,frame n: as shown in Figs. 2 and L.

Specification uf Letters Patent.

Patented Aug. ,21, 1917.

AppiieatirmV filed Decembcr3,1914. Serial N0. 875,299.

A protractor 9. is carried by the rocking' frame (i, as shown in thedifferent ii ures, and hears on its face a graduated sea eby which theangle at which the lens carried by' the clutch shall be presented tothe'grinding ..60 face may be determined when the.spfring-l clip 10,.shown in the diiferentiiguress L' clamped in operative. position. VTheclip 10 Y' is adjustably inountedon the, protraetor 9' ,y

as shown, thethun rlg -screw 11 beingused to clampv it in position.4'[`he:.jmi-1s.of 'the'clip 10 .have journaled ,triiereimthe :innerendsfof and are provided withV gears 12,'12 which are operatively connected,as shown and indicated iu Figs. 1 and 2, with the gea-rs'l.' lf3 of thefriction clutch, which are carried bv the clip 1U as Shown, throughthefnter-- mediate gear 1i), 19 also carriedby said elip The outersections ofy the drivingfshaftt-S* flexible material .in a tubularsleeve." "The ed ou shaft 7, which nceeives motion through',

the sprocket chain 21`f`froim the main 2i, as sliown in`i1`igs.'l'and`3.

The jaws of thc spring clip 10 are in'a'in'- tained in operativelposition by the' Spring' 20, lshown in Fig. l, which spreads the han'-dles 1U and 10" and contracts the iaws; a pattern 1G. aLSo shown in saidligureheid with the material in the clutch ofthe jaws,-

bears on a sto 17, shown in Figs. 1 and 2, and controls t ie shaping ofthe lens in the .setting operation.

In n'iounting my attachment on any "grinding machine of the typeillustrated in my flexible. shaft4 and handles are released setting theclutch. A

'llie clip is then moved to the proper angle :xa iudirated on theprotraetor scale to set tin,- leus or to produce 'the desired bevel ofthe rim: the thumbscrew is then set locking the clip in operativeposition and the power is turned on.

Havingl thus specified, shown and described t invention:

1. In a machine for grinding the rims of optical lenses, in combination,a mainframe, a grinding wheel thereon, a second frame 1 mounted to rockon the ina-in'frar'ne, a driving means having rigid and flexiblesections and mounted in the second frame, a rotary clutch driven by thedriving means, a spring clip carryin the clutch and adjustably i5mounted on t ie rocking frame to permit the Alens to be positioned forproducing a flat rim or beveling the ed es at an desired angle, andmeans for con orming t e motion of the rocking frame to the curvature ofthe 2o periphery of the lens.

2. In a machine for grinding the rims ofv optical lenses, incombination, a main frame,

a grinding wheel thereon a second frame mounted to rock on the mainframe, a sectional driving means havin rigid and flexvible connectionssupported y said rocking :frame, 'said frame being rocked by the sameisouree of power ns that which actuates the '.grindin wheel, a springclip adjustably mount on said rocking frame, a rotary clutch carried bysaid spring clip, the flexible sectionsbf said driving means givingmotion to said clutch' whereby the lens is adapted to be rotated inoperative position 1.5 :for ad'ustabiy producing a flat rim or bevclingt e edges thereof at any desired angle,

a pattern and a stop.

3. In a machine for grinding the rims of optical lenses, in combination,a main frame,

0 a grinding wheel thereon, a second frame mounted forrockiiig movement.on the main e same, I claim us novel and my frame, a driving meansmounted. on said frame, 'said driving means and grinding wheel beindriven rom the same source o power, sai driving means including twoouter rigid sections 'ournaled in the rocking frame through w ich itreceives motion,

a protractor fixed 'to the main frame, a spring clip adjustably mountedon said prol tractor, a rotary lens clutch carried by said so clip, saiddriving means including twflexible inner sections adapted to impartmotion to such clutch, said protractor being gradu.

ated to indicate the grinding angle when-the clip is in operative'tionand, means for 55 conforming the motion of the rockfngflframe tothe-curvature of the periphery of t 'e lens. 4. In a machine forgrinding the rims of optical lenses in combination, a main frame, agrinding wheel mounted on said frame, a second frame mounted for rockingmovementon 'the main frame, adriving.meais carried bysaid rocking framesaid drivingmeans and said grindin whee being driven from the samelsource o power, said driving U means includin two outer and rigidsections through w ich it receives motion and two flexible innersections, a clip adjustably mounted on the rocking frame, a rotaryclutch carried b said clip, the inner sections of the riving meansimparting mesv tion to said clutch wherebyto rotate,

in such adjustable o rative position as may, 1f be re uired to beve theof., thelens,at any esired angle, and means for'confoi'xnf-?s ingthe-motion of the roc-king 4fratrie to thecurvature of the periphery ofthe lens.

MAURICE MOLINEAUX. Witnesses:

J fans Ksn'ron, VVnsoN W. Hoovns.

